Packer for pump liners



NGV. 17, 1931. L HAMER v1,832,115

PACKER FOR PUMP LINERs Filed Ju'ly 25, 1928 Patented Nov. 17, 1931 narran stares rarsnrorricn LELAND S. KAMER, OF LONG BEACH, CALFORNIL. ASSIGNOR TO KAMER OIL TOOL COMPANY, LIMITED, OF LONG BEACH, CALIFORNIA, A CORPOBATON OF DELAWARE Paolini?. non PUMP Linens Application filed July 25, 1928. Serial No. 295,244.

This invention has to do with a packer for a pump liner or the like, and it is a general object ofthe invention to provide a simple, inexpensive, effective, and easily handled packer forsealing one member within ani other, for instance a liner in a cylinder. Liners are often mounted in cylinders, particularly in pump cylinders, it being common practice to provide a packing gland between my the liner and cylinder to carry rubber packing, or the like. In practice the rubber packing ordinarily used in this class of work is compressed tightly in the gland between the liner and cylinder soV that it isdiflicult, in fact in some cases almost impossible, to removethe liner for purpose of repair or replacement.

An object of this invention is to provide a packing or packer for use in packing' two members such as a liner in a cylinder and which readily releases or frees the liner when it is desired to remove the liner from the cylinder.

Another object of the invention is to provide a packer of the character mentioned which is effective and dependable in making a fluid-tight liointV between the members to be packed. v

It is a furthe* object of this invention to provide a packer of thecharacter mentioned which is simple and inexpensive ofV manu.- facture and also simple and convenient to handle. Y

The various objects and features ofmy nvention will be best and` more fully understood from the following` detailed description of a typical form .and application of theinvention, throughout which description I refer to the accompanying drawings, inl which:

Fig.l 1 is a longitudinal detailed sectional view taken through a typical pump cylinder showing a liner in the cylinder and packing embodying the present invention in operating position in the gland provided between the liner and the cylinder. Fig. 2 is an enlarged detailed transverse sectional view taken as indicatedby line 2-2 on Fig. 1. Fig. 3 is a sectional view taken as indicated by line 3-3 on F ig. 2, and Fig. 4 is an enlarged detailed sectional view of the packer provided by this invention.

mounted in the cylinder, a clamp 13 engaging the liner tehold it in the cylinder, a clamp screw 14 carried by one of the heads 11 to actuate the clamp' 13,21- piston 15 slidably fittingthe liner a. piston rod 16 .connected to the piston vand extending through one of the heads 11, and various other parts common to apparatus ofzthis general character.v Y

y In the drawings I have shown a typical or simple form of liner mounting. Inf-the case illustrated7 the opening of the cylinder has an enlargement 17 extending inwardly from one end and terminating in a shoulder 18. The liner 12has-an outwardly extending enlargement or flange 19 on one end' fitting the `enlargement 17 ofthe cylinder. The flange 19 on' the4 liner" has a shoulder 20 facing the shoulder' 1S inthe cylinder, and the parts are arranged and proportioned so that-there' is a chamber or space between the shouldersV .1S-and. 2O kforming a., gland to carry packing.

rlie packer or packing providedby the present invention isfintended to be used'in a gland suclras l' have above described. rEhe packer comprises, generally, two sections,

namely, an inner or liner section A and an outer or cylinder section B. The liner section A is adaptedtomore orless closely -itor engage the exterior 'of the liner 12v and freely lit theopening'or enlargement `17 in the cylinder while the cylinder section B is adapted .to more or `less closely vfit the opening or enlargement .17 kin Vthe cylinder and freely- `lit the liner.

The liner section A comprises a body-25in the formof a ring adapted to fit between the liner and thewall of the opening 17 of the cylinder and to engage or seat against one of the shoulders, for instance the shoulder 18. The body 25 of the liner section A preferably fits more or less closely around the liner 12 and lits the opening 17 with passing or sliding clearance. Both sections of the device are formed mainly of rubber, or the like, it being preferred, however, to provide a reinforcing ring 26 ofinetal in the body 25, as illustrated in the drawings. The ring may be a flat washer-like member. It is preferablyv provided with a plurality of openings 27 into and through which the rubber extends caus ing the ring to be securely and permanently embedded in the body of rubber. In practice the metal ring may be completely sealed or covered in the rubber.

In accordance with my invention, the liner section A has a sleeve-like extension 30 projecting from the body 25 to fit or seat on the liner 12 and to cooperate with the cylinder section B. The sleeve extension 30 preferably hasa uniform inside diameter tting more or less closely over or around the liner 12. rIhe exterior or face 31 of the sleeve extension is taperedor made outwardly convergent, that is so that it converges from its inner end where it joins the body 25 to its outer or projecting end.

The cylinder section B of the packer is made to fit the opening` 17 in the cylinder and is made complementary to the section A, that is it is made to fit or cooperate with the section A` to lill the gland or packing chamber, as clearly illustrated throughout the drawings. The section B mayinclude a body part 35 in the form of a ring corresponding generally to the body part 25 of the section A. A metal reinforcing ring 36, similar to the ring 26, may be provided in the body 35 of the section B. A sleeve extension 37 is provided on the body 35 to lit or seat in the opening 17 of the cylinder and to have a tapered inner face 38 to fit or seat against the exterior 31 of the sleeve extension 30 'of section A. 7|Ilie inner face or interior 38 of the sleeve extension 37 is tapered to correspond to the exterior 31 lof the extension 30, and the sleeve extensions 30 and 37 are of the same length. It will be noted from inspection of the drawings that the two sections lit together so that Vthe outer ends of the sleeve extensions engage the bodies of the sections when the sections are in operating position.

YIn using the packery the two sections are assembled or arranged together in the gland or packing chamber as shown throughout the Vdrawings, the liner section A having a natural tight lit or seat on the exterior of the liner and the cylinder section B having a natural tight lit or seat in the opening 16 in the cylinder. The bodies 25 and 35 of the sections engage the shoulders 18 and 20 at the ends of the gland so that the sleeve extensions 30 and 37V of the sections wedge together and expand each other as the screw 111 is operated to tighten the clamp 13 against the liner. Y

In practice it is preferred to apply grease, or the like, between the faces 31 and 38 of the packer sections, it having been found that this facilitates freeing of the sections when the liner isrenioved. 1t will be obvious from the drawings that the formation and tting together of the sections as above described causes the packerto make a tight, dependable seal between the liner and cylinder. The most important feature of the invention, however. is the fact that the sections readily separate when the clamp is released allowing the liner to be freely removed from the cylinder. It has been found that under actual operating` conditions the sections of the packer part'freely, making it unnecessary to use complicated and expensive liner pullers such as have to be employed when removing a liner packed in a cylinder by means or the ordinary packing.

Having described only va typical preferred' form of my invention, I do not wish to limit myself to the specific details set forth, but wish tov reserve to myself any changes or variations that niay appear to those skilled in the art or fall within the scope of the following claims.

Having described my invention, I claim:

l. A packer of the character described including, two separable sections each including a cylindrical part and a tapered extension on the cylindrical part. the extensions being shaped to fit one into the other, the engaging` faces of the extensions being tapered, the end of the extension of one section engaging the shoulder beyond the cylindrical i part of the other section. v

2. A packer of the character described, including two separable complementary annular sections, each including a cylindrical part and a tapered extension on the cylindrical part, tlie'extensions being shaped to fit one '5110 into the other, the engaging faces of the extensions being tapered, the end of the extension of one section. being in engagement with a radial side of the cylindrical part of y LELAND S. I-IAMER. 

